Correct. The face of the cabinet case should always align with the face of the cabinet doors. This is standard practice in the cabinetry industry.
Most people who plan to spray their cabinets on site, or have a local painter do the finishing, will simply wipe on or use a small brush to apply primer and paint to the exposed case edges as needed. Spraying the faces will produce the best finish quality since it creates a smoother surface. However, the exposed area is only about 3/4″ wide, so even a fairly rough brush application of primer and paint will usually look acceptable.
If spraying is used, the cabinet faces will need to be carefully taped and masked to prevent overspray. This masking and preparation work is typically the most time-consuming and costly part of the process. While spraying will look nicer, those areas will ultimately be covered by the cabinet doors once they are installed, so it is usually not worth hiring a professional just for that portion.
The cabinet doors, on the other hand, are absolutely worth having professionally sprayed. They are the most visible part of the cabinetry and will be seen and handled daily, so finish quality and durability matter much more there.